Rotary displacement piling equipment

A rotary displacement piling equipment for boring a hole within the soil comprising:

• a rotary displacement bit;
• driving rod means having an upper end and a lower end connected to said bit;
• casing means surrounding said driving rod means to be forced down into the soil;
• a casing adapter having an upper end and a lower end, the lower end provided with a cylindrical collar for co-operating with an upper part of said casing means for keeping in line said casing means with respect to said driving rod means and with an horizontal thrust face for applying a thrust at the upper part of said casing means, and said driving rod means passing through said casing adapter;
• a rotary drive box co-operating with said driving rod means for rotating said driving rod means, said rotary drive box being provided with connecting means to be connected to the upper end of said casing adapter, whereby said casing adapter is rotated by said rotary drive box;
• and
• vertical supporting and guiding means for supporting and vertically guiding said rotary drive box.